## ››Convert gigajoule to megajoule

 gigajoule megajoule

How many gigajoule in 1 megajoule? The answer is 0.001.
We assume you are converting between gigajoule and megajoule.
You can view more details on each measurement unit:
gigajoule or megajoule
The SI derived unit for energy is the joule.
1 joule is equal to 1.0E-9 gigajoule, or 1.0E-6 megajoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between gigajoules and megajoules.
Type in your own numbers in the form to convert the units!

## ››Quick conversion chart of gigajoule to megajoule

1 gigajoule to megajoule = 1000 megajoule

2 gigajoule to megajoule = 2000 megajoule

3 gigajoule to megajoule = 3000 megajoule

4 gigajoule to megajoule = 4000 megajoule

5 gigajoule to megajoule = 5000 megajoule

6 gigajoule to megajoule = 6000 megajoule

7 gigajoule to megajoule = 7000 megajoule

8 gigajoule to megajoule = 8000 megajoule

9 gigajoule to megajoule = 9000 megajoule

10 gigajoule to megajoule = 10000 megajoule

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You can do the reverse unit conversion from megajoule to gigajoule, or enter any two units below:

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## ››Definition: Gigajoule

The SI prefix "giga" represents a factor of 109, or in exponential notation, 1E9.

So 1 gigajoule = 109 joules.

The definition of a joule is as follows:

The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).

## ››Definition: Megajoule

The SI prefix "mega" represents a factor of 106, or in exponential notation, 1E6.

So 1 megajoule = 106 joules.

The definition of a joule is as follows:

The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).

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